Astronomy 2021A/B Lecture Notes - Exoplanet, Planetary Science, Extraterrestrial Life
16 Oct 2011
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1 a universe of life? (page 1) Aliens everywhere in media movies, tabloids, even serious papers/magazines run the occasional articles on ufo sightings or area 51 . Around of all americans claim to believe we have already been visited by beings from other worlds. : search for life in other worlds, searching for signals. Important search to change perspective on how we fit into universe as a whole, and give deeper meaning to life here on earth. Extraterrestrial life (life beyond earth) includes any sign of life simple, complex, intelligent, whatever. Right side does this too because of difficulty , for scientific search, life = recognizably earth-like, can recognize based on studying earth life. Search for life new; idea of life not ancient cultures e. g. ancient greeks. Until recently, no way to scientifically test, could only imagine: any small data misinterpreted too. Now enough telescope/spacecraft photos of our solar system . : quite confident no life still looking though lot.
